Summary

This data collection contains the basic information about
all counties in the coterminous United States needed for mapping
county-based data. It provides an interface between ICPSR datasets and
the mapping programs SAS/GRAPH, SURFACE II, and SYMAP. Cloropleth and
isopleth maps can be produced by match-merging this dataset with any
other dataset (special facilities exist for ICPSR datasets) and
running the merged data against a cartographic program. Isopleth
mapping programs, using the latitude and longitude coordinates provided
for each county seat, can produce maps of ICPSR data. Cloropleth
mapping of county-level data can be accomplished after merging by
running the merged dataset through SAS/GRAPH. The variables
provide state Federal Information Processing (FIPS) codes, county FIPS
codes, county names/county seat names, the month, day, and year in which each county was created, the latitude and longitude of county seats, as well as the ICPSR state and county codes.

Time Period(s)

Time Method

Unit(s) of Observation

Data Type(s)

Original Release Date

Version Date

Version History

2012-11-06 SPSS, SAS, and Stata setup files, as well as SPSS and Stata system files and a SAS transport (CPORT) file have been added to the collection. The codebook has been updated.

1984-07-13 ICPSR data undergo a confidentiality review and are altered when necessary to limit the risk of disclosure. ICPSR also routinely creates ready-to-go data files along with setups in the major statistical software formats as well as standard codebooks to accompany the data. In addition to these procedures, ICPSR performed the following processing steps for this data collection:

Created variable labels and/or value labels.

Checked for undocumented or out-of-range codes.

Notes

Data in this collection are available only to users at ICPSR member institutions.

This study is provided by ICPSR. ICPSR provides leadership and training in data access, curation, and methods of analysis for a diverse and expanding social science research community.